Study On Ecological Carrying Capacity Evaluation Of Protection Station After Qilian Mountain Ecological Restoration Project

The contradiction between the carrying capacity of natural resources in Qilian Mountain Nature Reserve and China’s economic development has become increasingly prominent.In order to solve this contradiction,the main factors affecting the ecological carrying capacity of the region are identified,and the decision-makers are also provided the basis for formulating response measures.This paper takes the ecological carrying capacity of the rehabilitation project protection station of Qilian Mountain Nature Reserve as the research object,and uses the improved set pair analysis method to study and analyze the ecological restoration engineering protection station from the four aspects of ecological flexibility and ecological stress of the protection station.The overall ecological carrying capacity status,etc.,through the analysis of the evaluation results,develop corresponding solutions and repair measures.specifically:(1)Construction of evaluation index system and determination of weight.With reference to previous research results on ecological carrying capacity,and through field research on the actual situation of Qilian Mountain Nature Reserve,the historical data of the influencing factors in the study area were analyzed and studied in depth,and the ecological carrying capacity evaluation index system was constructed.Then,based on remote sensing,GIS analysis and expert group review results and other analytical data,determine the eigenvalues??of all evaluation indicators of each protection station;use the analytic hierarchy process and entropy weight coefficient method to determine the host-guest weight value of the ecological carrying capacity evaluation index of the study area,and then Determine the combination weights of the indicators through an integrated method to find the main influencing factors;(2)The idea of ??establishing an evaluation model.The ecological system of each protection station in Qilian Mountain Nature Reserve is a complex ecosystem composed of multi-level structures.To this end,an improved set pair analysis evaluation model and fuzzy comprehensive evaluation method are introduced,and an analysis process consisting of two basic parts is established.Single factor evaluation: Based on the evaluation of single factor eigenvalues ??of different ecological elements in the study area,according to the evaluation criteria of ecological carrying capacity,the degree to which each single element belongs to different grading standards is calculated,and the relative correlation degree of single factors is obtained.matrix.Comprehensive evaluation of regional ecosystems: According to the evaluation results of the ecological carrying capacity of each single factor,the relative relevance matrix of thewhole regional ecosystem is obtained,and the comprehensive assessment of the ecological carrying capacity of regional ecosystems is carried out by combining the weights of each single factor.(3)Evaluation of the basic process and content.Using the comprehensive evaluation method,the Qilian Mountain Ecological Restoration Project Protection Station is taken as the basic evaluation unit to analyze the ecological carrying capacity of the protection station.Specifically,the evaluation index value of each restoration engineering protection station is compared with the ecological carrying capacity evaluation standard.Then,using the improved set pair analysis model,the relative membership degree of each single factor evaluation index is obtained,and the ecological carrying capacity level of each single index is determined.Finally,the relative correlation degree of each single evaluation index weight and its level standard is obtained.Integration is carried out to obtain the correlation matrix of single factor ecological carrying capacity,and the overall ecological carrying capacity level of each protected station unit is obtained according to the comprehensive weight of each evaluation index.(4)Analysis of evaluation results.According to the results obtained from the application of this model,one of the five protection stations in the Qilian Mountain Nature Reserve has an ecological carrying capacity level that is not overloaded,one protection station is slightly overloaded,and two are moderately overloaded.This indicates that the ecological carrying capacity of the ecological restoration project protection station in the Qilian Mountain area has not achieved good benefits,and the decision-makers need to re-plan the restoration plan so that the ecology can adapt and carry the intensity of human activities,including not only current human activities,but also history.And human activities in the future.